Idiots. Firefox is /PREINSTALLED/ on just about every f* Linux distro. Who on
earth downloads Linux versions of Firefo?. Even many updates are automatic.
Not to mention repos... got my last Firefox update 2 days ago.., off the repo.

They think about WebKit now (as an option, I think).
> I have no idea whether [2] and [1] have a common code base,
> but there's Galeon, Epiphany, and Kahehakase which depend
> on Gecko, and there may be others.
>
> This is a more complex question than it really should be.
>